import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'


Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    { path: '/home', component: Home },
  ]
})
//挂在导航守卫
router.beforeEach((to, form, next) => {
  //to 跳转页面
  //form 来源页面
  //next 代表函数，表示方行 》next() 放行    next('/login') 强制跳转
  if (to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router